package day28_35.day34;

import java.util.Scanner;

public class Main02 {
    public static void main(String[] args) {

        Scanner scn = new Scanner(System.in);
        while (scn.hasNext()){
            String str = scn.nextLine();
            String[] strArr = str.split("<br/>");
            long[] n = new long[90];
            n[0] = 1 ;n[1] = 2;
            for (int i = 2; i < n.length; i++) {
                n[i] = n[i - 1] + n[i - 2];
            }
            for (int i = 0; i < strArr.length; i++) {
                System.out.print(n[Integer.parseInt(strArr[i]) - 1]);
                if (i != strArr.length - 1) System.out.print("<br/>");
            }
            System.out.println();
        }

    }
}
